docs: update documentation

Update the mu-find man-page; update NEWS.org and mu4e.texi for the way
threading works.

1 files changed, 5 insertions, 9 deletions

diff --git a/man/mu-find.1 b/man/mu-find.1
index 5e46487..c980593 100644
--- a/man/mu-find.1
+++ b/man/mu-find.1
@@ -1,11 +1,9 @@
-.TH MU FIND 1 "19 April 2015" "User Manuals"
+.TH MU FIND 1 "12 February 2021" "User Manuals"
 
 .SH NAME
 
 mu find \- find e-mail messages in the \fBmu\fR database.
 
-mu mfind \- find e-mail messages in the \fBmu\fR database with mu4e defaults.
-
 .SH SYNOPSIS
 
 .B mu find [options] <search expression>
@@ -15,9 +13,6 @@ mu mfind \- find e-mail messages in the \fBmu\fR database with mu4e defaults.
 \fBmu find\fR is the \fBmu\fR command for searching e-mail message
 that were stored earlier using \fBmu index\fR(1).
 
-\fBmu mfind\fR is a version of \fBmu find\fR that defaults to
-\f--include-related\fR and \fB--skip-dups\fR, just like \fBmu4e\fR does.
-
 .SH SEARCHING MAIL
 
 \fBmu find\fR starts a search for messages in the database that match
@@ -226,9 +221,10 @@ Gmail-style 'conversations'. Note, finding these related messages make
 searches slower.
 
 .TP
-\fB\-t\fR, \fB\-\-threads\fR show messages in a 'threaded' format -- that is,
-with indentation and arrows showing the conversation threads in the list of
-matching messages.
+\fB\-t\fR, \fB\-\-threads\fR show messages in a 'threaded' format --
+that is, with indentation and arrows showing the conversation threads
+in the list of matching messages. When using this, sorting is
+chronological (by date), based on the newest message in a thread.
 
 Messages in the threaded list are indented based on the depth in the
 discussion, and are prefix with a kind of arrow with thread-related